Electrostatic Capacitance Type Touch Panel and Screen Input Display Device Including the Same

• US 20090262095A1
• Filed: 04/15/2009
• Published: 10/22/2009
• Est. Priority Date: 04/16/2008
• Status: Active Grant

• Current Assignee: Paneltouch Technologies LLC (Touch Display LLC)
• Original Assignee: Japan Display Incorporated
• Inventors: KINOSHITA, Masayoshi, Hatano, Mutsuko, Mamba, Norio
• Granted Patent: US 8,638,313 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

An electrostatic capacitance type touch panel includes: a substrate; a plurality of first electrodes disposed in parallel on the substrate; an insulating film formed so as to cover the plurality of first electrodes; a plurality of second electrodes disposed in parallel to intersect the plurality of first electrodes on the insulating film; a plurality of first drawing wiring lines connected to the plurality of first electrodes to be drawn to a connection terminal; and a plurality of second drawing wiring lines connected to the plurality of second electrodes to be drawn to the connection terminal. The plurality of first drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of first drawing wiring lines as the lengths are longer.

Claims

1. An electrostatic capacitance type touch panel, comprising:

a substrate;

a plurality of first electrodes disposed in parallel on the substrate;

an insulating film formed so as to cover the plurality of first electrodes;

a plurality of second electrodes disposed in parallel to intersect the plurality of first electrodes on the insulating film;

a plurality of first drawing wiring lines connected to the plurality of first electrodes to be drawn to a connection terminal; and

a plurality of second drawing wiring lines connected to the plurality of second electrodes to be drawn to the connection terminal,

wherein the plurality of first or second drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of first or second drawing wiring lines as the lengths are longer.

2. An electrostatic capacitance type touch panel according to claim 1, wherein each of the plurality of first electrodes and the plurality of second electrodes is formed so that pad portions and thin line portions thinner than the pad portions are alternately arrayed in an extending direction of the each of the plurality of first electrodes and the plurality of second electrodes, and in plan view, the pad portions of the plurality of first electrodes and the pad portions of the plurality of second electrodes are arranged so as not to overlap each other.

3. An electrostatic capacitance type touch panel according to claim 1, wherein:

the plurality of first electrodes comprise a transparent conductive layer;

the plurality of first drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer;

the plurality of second electrodes comprise a transparent conductive layer; and

the plurality of second drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer.

4. An electrostatic capacitance type touch panel, comprising:

a substrate;

a plurality of first electrodes disposed in parallel on the substrate;

an insulating film formed so as to cover the plurality of first electrodes;

a plurality of second electrodes disposed in parallel to intersect the plurality of first electrodes on the insulating film;

a plurality of first drawing wiring lines connected to the plurality of first electrodes to be drawn to a connection terminal; and

a plurality of second drawing wiring lines connected to the plurality of second electrodes to be drawn to the connection terminal, wherein;

the plurality of first drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of first drawing wiring lines as the lengths are longer; and

the plurality of second drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of second drawing wiring lines as the lengths are longer.

5. An electrostatic capacitance type touch panel according to claim 4, wherein each of the plurality of first electrodes and the plurality of second electrodes is formed so that pad portions and thin line portions thinner than the pad portions are alternately arrayed in an extending direction of the each of the plurality of first electrodes and the plurality of second electrodes, and in plan view, the pad portions of the plurality of first electrodes and the pad portions of the plurality of second electrodes are arranged so as not to overlap each other.

6. An electrostatic capacitance type touch panel according to claim 4, wherein:

the plurality of first electrodes comprise a transparent conductive layer;

the plurality of first drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer;

the plurality of second electrodes comprise a transparent conductive layer; and

the plurality of second drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer.

7. A screen input display device, comprising:

a display device; and

an electrostatic capacitance type touch panel disposed on at least a display area of the display device, wherein;

the electrostatic capacitance type touch panel comprises;

a substrate;

a plurality of first electrodes disposed in parallel on the substrate;

an insulating film formed so as to cover the plurality of first electrodes;

a plurality of second electrodes disposed in parallel to intersect the plurality of first electrodes on the insulating film;

a plurality of first drawing wiring lines connected to the plurality of first electrodes to be drawn to a connection terminal; and

a plurality of second drawing wiring lines connected to the plurality of second electrodes to be drawn to the connection terminal, wherein

the plurality of first or second drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of first or second drawing wiring lines as the lengths are longer.

8. A screen input display device according to claim 7, wherein each of the plurality of first electrodes and the plurality of second electrodes is formed so that pad portions and thin line portions thinner than the pad portions are alternately arrayed in an extending direction of the each of the plurality of first electrodes and the plurality of second electrodes, and in plan view, the pad portions of the plurality of first electrodes and the pad portions of the plurality of second electrodes are arranged so as not to overlap each other.

9. A screen input display device according to claim 7, wherein:

the plurality of first electrodes comprise a transparent conductive layer;

the plurality of first drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer;

the plurality of second electrodes comprise a transparent conductive layer; and

the plurality of second drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer.

10. A screen input display device, comprising:

a display device; and

an electrostatic capacitance type touch panel disposed in at least a display area of the display device, wherein;

the electrostatic capacitance type touch panel comprises;

a substrate;

a plurality of first electrodes disposed in parallel on the substrate;

an insulating film formed so as to cover the plurality of first electrodes;

a plurality of second electrodes disposed in parallel to intersect the plurality of first electrodes on the insulating film;

a plurality of first drawing wiring lines connected to the plurality of first electrodes to be drawn to a connection terminal; and

a plurality of second drawing wiring lines connected to the plurality of second electrodes to be drawn to the connection terminal, wherein

the plurality of first drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of first drawing wiring lines as the lengths are longer; and

the plurality of second drawing wiring lines have different lengths, larger widths as the lengths are shorter, and larger intervals between adjacent two of the plurality of second drawing wiring lines as the lengths are longer.

11. A screen input display device according to claim 10, wherein each of the plurality of first electrodes and the plurality of second electrodes is formed so that pad portions and thin line portions thinner than the pad portions are alternately arrayed in an extending direction of the each of the plurality of first electrodes and the plurality of second electrodes, and in plan view, the pad portions of the plurality of first electrodes and the pad portions of the plurality of second electrodes are arranged so as not to overlap each other.

12. A screen input display device according to claim 10, wherein:

the plurality of first electrodes comprise a transparent conductive layer;

the plurality of first drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer;

the plurality of second electrodes comprise a transparent conductive layer; and

the plurality of second drawing wiring lines are formed into a two-layer structure including a transparent conductive layer and a metal layer.